參數(shù)資料
型號: MTC20174
廠商: 意法半導體
英文描述: PCI/USB ADSL CHIPSET
中文描述: 的PCI / ADSL芯片組的USB
文件頁數(shù): 3/6頁
文件大?。?/td> 121K
代理商: MTC20174
3/6
ST70138
September 2004
This is preliminary information on a new product foreseen to be developed. Details are subject to change without notice.
4
SUPPORT DIGITAL SIGNAL PROCESSING
REQUIREMENTS FOR ONE ADSL CPE
CHANNEL (ITU-R)
COMPLIANT WITH ITU 992.1 (ADSL FULL
RATE) ANNEX A (ADSL OVER POTS),
ANNEX B (ADSL OVER ISDN), ITU 922.2
(G.LITE) AND ANSI T1.413.
ENHANCED FTP TRANSFER CAPABILTIES
DIRECT INTERFACE TO USB (USB RELEASE
1.1 SPECIFICATION)
DIRECT INTERFACE TO EXTERNAL 8/16bit
SERIAL MEMORY TO SUPPORT USB
USER'S CONFIGURATION.
DIRECT ANALOG FRONT END INTERFACE
FOR MTC20174
CLOCK & RESET INTERFACE
1.8V AND 3.3V POWER SUPPLY
TTL LOGIC LEVELS COMPATIBLE
POWER MANAGEMENT CAPABILITIES
LOW POWER CONSUMPTION : MAX 0.45W
TQFP144 (ORDER CODE ST70138T -
BACKWARD COMPATIBLE WITH PREVIOUS
ST70137)
LFBGA80 (ORDER CODE ST70138B)
HARDWARE FEATURES
5
Unicorn II is an evolution of the field-proven and
mass deployed Unicorn modem that dramatically
lowers the overall system cost when designing
and producing a USB ADSL modem. The Unicorn
II chipset is designed using cost effective CMOS
technology, further integrating external compo-
nents which leads to even lower E-BOM costs, re-
duced component count and lower PCB
complexity; All of this while increasing overall per-
formance. Its proven controller-less and SDRAM-
less architecture is highly competitive and well
suited in today's cost focused modem market.
The Unicorn II chipset is designed to simplify the
development of low-cost ADSL CPE modems for
Windows, Mac and Linux based environments and
enables manufacturers to achieve a very compet-
itive production cost. Due to its controller-less ar-
chitecture and particularly the advantage that it
does not require an external SDRAM in its E-BOM,
the total cost of the external components needed
DESCRIPTION
in the modem is the best in its class. With a low
component count of less then 140 external compo-
nents and small form factor packages, the Unicorn
II easily fits on a standard 2 layer single sided PCB
with small dimensions which is contributes signifi-
cantly to further lowering overall system costs. To-
gether with its low power consumption, high-
speed performance up to 8 Mbps and customiz-
able complete software driver packages, the Uni-
corn II is the ideal choice for USB based ADSL
modems.
The ST70138T/B is the ADSL DMT transceiver
chip of the UNICORN2 Chipset.
ST70138T in intended to be used as a pin-to-pin
replacement part of the ST70137 device in order
to get advantage from its better cost-structure and
its enhanced FTP transfer capabilities. ST70138T
is packaged in a TQ144 package. Full backward
compatibility with already existing USB PCB de-
signs is assured.
ST70138B, packaged in LFBGA80 is intended for
new PCB designs, which will benefit from exten-
sive E-BOM reduction in the reference design,
mass production friendly EEPROM programma-
tion, enhanced FTP throughput and overall lower
system cost structures.
Eleven years of experience have enabled ST to de-
velop a chipset that offers full compatibility with all
current full-rate and G.lite ADSL standards, USB
standards including plug-and-play support. The Uni-
corn II chipset has a comprehensive driver suite that
supports Windows operating systems from 98 to XP,
Mac operating systems 8 to X and Linux. The Unicorn
is fully interoperable with all major DSLAMs and is
compliant to TR-048 (DSLforum) and ETSI 101 388
performance requirements.
DATA BRIEF
UNICORN II USB
CONTROLLERLESS ADSL DMT TRANCEIVER
Figure 2. Packages
Table 1. Order Codes
Part Number
ST70138T
ST70138B
Package
TQFP144
LFBGA80
TQFP144
LFBGA80
相關PDF資料
PDF描述
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